Use the configured Notifier to log messages

[fisco-unimatic]

The GrpcHttpServerFactory passes the configured notifier into the GrpcFilter. The GrpcFilter stores that as a new field, and then passes it on to the handlers that it builds. The handlers also store the notifier as a new field, and then set the it in the LocalNotifier thread-local before invoking stubRequestHandler.handle.

References

Issue#38 verbose console output

Submitter checklist

• [ ] Recommended: Join WireMock Slack to get any help in #help-contributing or a project-specific channel like #wiremock-java
• [ x] The PR request is well described and justified, including the body and the references
• [x ] The PR title represents the desired changelog entry
• [x ] The repository's code style is followed (see the contributing guide)
• [x ] Test coverage that demonstrates that the change works as expected
• [ ] For new features, there's necessary documentation in this pull request or in a subsequent PR to wiremock.org